howell



H. M. HOWELL.

. DEMOUNTABLE RIM. I APPLICATION lflLl-ZD JULYH, 192l- 1,433,279. Patented Oct 24,1922.

2 SHEETS-SHEET 1.

' IIVVEIVTOR' 7 Henry M. Howell;

H. M. HOWELL.

DEMOUNTABLE RIM.

APPLICATION FILED .IULYIII 1921.

Patented 002 24,1922.

IN VEN TOR Hemy M. Howell;

WITNESSES A TTUR/VEYS Patented Oct. 24, 1922.

UNITED STATES PATENT OFFlCE.

HOWELL, F MONROE, LOUISIANA, ASSIGNOE, BY DIRECT AND MESNE ASSIGNMENTS, TO INSTANT CHANGEABLE TIRE RIM COMPANY, INC, 0 IYION- .BQE, LOUISIANA, A CORPORATION.

DEMOUNTABLE RIM.

Application filed July 11,

Tp all whom it may concern:

Be itknown that L'HENRY M. HownLL, a citizen of the United States, and a resident of Monroe, in the parish of Ouachita and State of Louisiana, have invented certain new and useful I nprovementlsin Demountable Rim 9 .Wh q th r o l ngi a p yfiratien The present invention relates .to .an imf 10 provenient in demountablerims of the type forming the subject-matter of myprior Patent N'o. 1,383,810, dated July 5, 1921.

The object of theinvention is to provide a "rim eofthischaracter,adapted to be utilized .iniconjunction with a spare tire pumped up andreadylfor service, which may be readily and easily mounted on or demounted from anytypeof wheel, whichpermits of the removal and replacement of .a tire on the demountable rim without the necessity of inching the tire over the tire retaining '1 angle, and which is ingeneral of simple and durable construction, ready, convenient andreliablein operation and easy and com paratively inexpensive to manufacture.

Otherobjeets and advantages of the invention reside in certain novel features of the construction combination and arrangement of parts which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawings forming part of this specification, and in -,W.h

lligure 1 is a group view in perspective illustrating the invention embodiedin a disk wheel with thedemountable rim removed and the outer tire retaining flangeremoved fromthe demountable rim.

,Eigure 2 is a fragmentary perspective view illu trat ng th -d mou t i mployed in conjunction with allforms of the nvention.

Figure 3 is a View in transversesection of Lthe embodiment of theinvention shown in El urel.

igure 41s a, detailed new n transverse -Section of the fixed rim on the wheel, the

sectionbeingtaken through one of thetransve s s ots Figure 1 5 is a view in transverse section 1921. Serial No. 483,923.

illustrating the invention embodied in a wooden wheel.

Figure 6 is a view in transverse section illustrating the invention embodied in conjunction with wire wheels.

Figure '7 is a view in transverse section illustrating the invention embodied in con junction with disk wheels.

Referring to the drawings, wherein for the sake of illustration is shown the preferred embodiments of the invention, and more particularly to Figs 1 to a inclusive, the numeral 10 designates generally a disk wheel which may be of any standard or desired construction, and which preferably includes a hub 11, a body portion or webbing 112 concaved or arched, and a fixed rim 13 which is connected with thebody portion or webbing 12 by an annular flange 14- preferably integral with the fixed rim and the body portion, and disposed at right angles to the axis of the wheel.

The fixed rim 13 is provided with a circumferential shoulder '16, which extends around its inner marginal edge and which is beveled to constitute a seat or abutment for the demountable rim. The fixed rim is also provided with an annular channel 17 extending circumferentially thereof and disposed in-parallel relation to and slightly spaced "from the annular shoulder 16 thus leaving the periphery of the fixed rim adjacent the shoulder 16 a flat inclined surface, designated at 16 and adapted to assist in the support of the demountable rim as will be understood. A plurality of transverse slots 18 lead from the channel 17 across tlieiixed rim to the outer side thereof. The bottom walls of these slots are inclined as clearly shown in Fig. '3, and the circumferential and constitute locking blocks and with the surface 17 take largely the weight of the demountable rim and tire and bear and ab sorb the stresses'incident to its use as will hereinafter more fully appear.

A 'demountable rim designated generally enlarged heads 28.

at 20 is provided and includes a base section 21, an inner fixed tire retaining flange 22, and an outer removable the retaining flange 25. On the underside of the base section 21 V-shaped ridges 24 are provided and engage the beveled or inclined faces of the segments 19 in the assembly.

A circumferential series of locking ribs 25 are carried on the underside of the base section and are adapted to pass through. the slots 18 into the locking channel 17 and to be rotated in the channel until they come behind and engage the locking blocks 19, the locking ribs serving when in this position to releasably maintain the demountable rim on the fixed rim of the wheel. a

The demountable rim is identical in all embodiments of the inventionand includes the locking plate 26 integral with the base section 21 of the rim and having a plurality of arcuate locking flanges v27 provided with The, arcuate locking flanges 26 are spaced from each other as shown in Fig. 2. 1 r

The outer removable-tire retaining flange 23 includes the locking plate 29 cooperable with the locking plate 26 of the base section and having a channel 30, the outer sides of the upper and lower walls of the channel having arcuate shoulders 31 spaced circumferentially to provide for the entrance of the enlarged heads 27 of the locking flanges 26 into the channel 30 and spaced radially to accommodate the locking flanges 27 when the outer plate 29 has been moved circumferentially with respect to thevinner plate 26 so as to confine the enlarged heads 28 behind the locking shoulders 31. a

Common means is provided for preventing circumferential movement of the demount- I able rim on the fixed rim and for preventing circumferential movement of the, lock- 'ing plate 29 with respect to the locking plate 26 when the locking plates are assembled. This mean's includes a bolt 32 extending through alined openings in the locking plate and in the wheel and adjustably held in position by a nut 33. y 1 h 1 y A tire designated at 35 is arranged on the demountable rim. 1 The tire may be mounted on the rim and demounted therefromyby simply removing the outer tire retaining flange and this obviates the necessity of pinching the beads of the tireover the flanges. Preferably a spare rim and tire are carriedon the vehicle with the tire pumped up and ready for serviceso that when any one of the tires is incapacitated it ma be readily removed by detaching the nut 33 and removing the bolt 32, and then grasping the tire so as to rotate the, demountable rim on the fixed rim until the locking ribs .25 are 'alined with the transverse slots 18'. l/Vhen the locking ribs are so alined with the slots, the rim may be pulled laterally from the wheel. The

45 anda locking channel 46. The fixed rim spare rim 1 with the tire pumped up and ready for service may then be readily placed on the rim by simply alining its locking ribs with the transverse slots, pushing the rim through the slots until the ribs are received in the locking channel then rotating the demountable rim until the locking ribs are positionedfbehind the locking blocks 19 and replacing the looking bolt and itsnut'.

In Figure 5 the invention'is shown embodied in a wooden wheel, the folly of which is designated at.36. A fixed rim indicated at37 is mounted on the telly and is con structed in all respects like the fixed rim 13, being provided with transverse slots 38 and a locking channel 39. The demountable rim here designated at 40 is identical with the demountable rim above described, and in includesspokes 13 a fixed rim 44: identical in "all respects with the fixedrlin shown In 7 Figs. 1 and 3, and'havmg transverse slots has integral therewith an annular flanged? which corresponds with the annular flange 14 in the embodiment shown vin- Figure 3. The demountable rim which is'designated at .18 is. identical in constructionwiththe demountable rims, shown in Figs. 1 and 3,land

includes a series of'lockinge'ribs 49 which cooperate'with the slots 45 and the channel .46.

The. operation drum embodiments shown a in Figs. 5 and 6 is identical in all respects with the operationot the embodiment shown a in Figs. 1 to 3, theembodiments shown in Figsao and 6 serving merely t0illustra;te

wooden or Wire wheels.

I claim: 2' 1. In combination witha wheelinelu de a jhow the invention is adapted Lfor-usei with .ing a flxedrim having an annular abutment I shoulder around one marginal edge and pro- 'vided with a lock ng channel slightly spaced from and parallel to the abutment shoulder,

the peripheryof the fixed rim between the,

shoulder and the channel comprising a 'bearing surface said fiXedrim-having transverse grooves leading from said channel, the grooves defining segments constituting locke ing blocks, the peripheral faces ofwhich presenting bearing surfaces,' a demountable rim cooperating with the fixed; rimfand having ridges thereon ,engagable with the bearing surfaces of the fixedrim for supporting the demountable rim'onthefixed rim, and,

looking ribs carried by the demountable rim and adapted to be passed through the'trans- 136 verse slots into the locking channel and to be rotated to locking position behind the locking block, and means for preventing circumferential movement of the demountable rim with respect to the fixed rim.

2. In a'device of the character described, a fixed rim having a locking channel slightly spaced from and parallel to'one marginal edge, the periphery of the fixed rim between the adjacent marginal edge and the locking channel constituting a bearing surface, said fixed rim having transverse grooves leading from the channel to the remote marginal edge and defining segments constituting locking blocks, the peripheral faces of the segments presenting bearing surfaces, and a demountable rim supported upon the hearing surfaces of the fixed rim and having locking ribs adapted to pass through the transverse slots into the locking channel and to be rotated to locking position behind the locking blocks.

3. In a, device of the character described,

.a fixed rim, a demountable rim, cooperating means between the demountable rim and the fixed rim for locking the demountable rim on the fixed rim when the demountable rim is moved transversely onto the fixed rim and then rotated circumferentially with respect thereto, releasable means for holding the demountable rim against circumferential movement with respect to the fixed rim, and independent means for supporting the demountable rim on the fixed rim including ridges carried by the demountable rim, said fixed rim having bearing surfaces extending over a substantial portion of its circumferential extent and upon which the ridges are engaged and directly supported whereby the demountable rim is supported on the fixed rim independently of said cooperating 4 means.

HENRY M. HOWELL. 

